.txt-l {
    font-size: 18px;
    font-weight: 30px;
    font-weight: 600;
}
.txt-m {
    font-size: 14px;
}
.txt-xl {
    font-weight: 600;
    font-size: 24px;
}
.warpBox {
    background-repeat: repeat-y;
    background-size: 100%;
    background-image: url(../images/img/about_bg.png);
    margin-bottom: 130px;
}
.content_1 {
    width: 80%;
    max-width: 1200px;
    font-size: 16px;
    padding-top: 35px;
    line-height: 24px;
}
.content_1 .txt_1 {
    text-indent: 2em;
}
.content_1 .txt_2 {
    margin-top: 20px;
}
.content_1 .img {
    padding-top: 30px;
    flex: 1;
    width: 100%;
}
.content_1 .img>img {
    width: 100%;
    height: 100%;
    display: block;
}
.txt_3 {
    margin-top: 40px;
    margin-bottom: 30px;
}
.imgArr img {
    width: 100%;
}
.imgArr>div {
    width: 32%;
}
.imgArr p{
    margin-top: 10px;
}